Expansion of e.g.f. exp(x^2/(1-x)^3).

Terms

a(0) =1a(1) =0a(2) =2a(3) =18a(4) =156a(5) =1560a(6) =18480a(7) =254520a(8) =3973200a(9) =68947200a(10) =1312748640a(11) =27175024800a(12) =607314818880